William p



(N Model.)

W. P. OANNING TRUMPET FOR MACHINES FOR PREPARING SLIVER. No. 549,956. Patented Nov. 19, 1895.

WITNESSES. JNVENTOR.

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UNITE STATES,

PATENT O FICE.

VILLIAM P. CANNING, OF LOW'ELL, MASSACHUSETTS, ASSIGNOR TO THE LOWELL MACHINE SHOP, OF SAME PLACE.

TRUMPET FOR MACHINES FOR PREPARING SLIVER.

SPECIFICATION forming part of Letters Patent No. 549,956, dated November 19, 1895. Application filed June 19, 1895. Serial No. 553,256. (No model.)

To all whom it may concern:

Be it known that I,WILLIAM PITT CANNING, a citizen of the United States, residing at Lowell, in the county of Middlesex and Com monwealth of Massachusetts, have invented certain new and useful Improvements in Trumpets for Machines for Preparing Sliver, of which the following is a specification, reference being had therein to the accompanying drawings.

For the attainment of the best results it has been found necessary in practice in the use of machines for preparing slivers to separate the delivery end of the trumpet from the bite of the rolls to which the trumpet delivers by a distance which is proportioned according to the length of the staple being handled and which is sufficiently great to prevent the ends of any considerable number of fibers which are stuck fast in the trumpet from passing into the bite of such rolls. When a bunch in the sliver .too large to be pulled through the opening in the trumpet by the action of the said pair of rolls enters the trumpet at the large end thereof and becomes lodged in the bore or passage of the trumpet, it is desirable that the said rolls should be enabled, in consequence of the draft which they exert upon the portion of sliver between themselves and the delivery end of the trumpet, to disrupt such portion, and thereby provide for the arrest of the working of the machine through the action of the stop-motion devices which ordinarily are employed for the purpose of detecting the discontinuance of the slivers. Should the delivery end of the trumpet be so close to the bite of the rolls that fibers which are wedged in the trumpet shall extend, also, into the bite of the rolls, the surfaces of the said rolls often will merely slip upon such fibers without advancing them, and in consequence the sliver will not be disrupted, while the machine will continue working with the trumpet choked, as indicated, and the sliver which is fed forward by the rolls that deliver to the trumpet will accumulate on the receiving side of the trumpet. It is necessary in practice, therefore, for the attainment of satisfactory results that the distance between the delivery end of the trumpet and the bite of the rolls to which the trumpet delivers should be sufficiently great to prevent any considerable number of the fibers from bridging the interval between them in the manner which is referred to at the outset herein. Other considerations, however, render it desirable to bring the delivery end of the trumpet as close to the bite of the rolls which take the sliver from the trumpet as it is possible to bring the same without rendering the distance so short as to be readily bridged by the fibers. The distance, therefore, usually varies with the length of the staple being handled.

Heretofore trumpets have been made, so far as I am aware, each of a fixed length, and when a change of staple has been made and it has been sought to vary the distance in a given machine between the delivery end of the trumpet and the bite of the rolls receiving sliver therefrom either the trumpet in such machine is removed and replaced by one of a different and more suitable length or the delivery end of such trumpet is ground off in part in case a shorter trumpet is required.

The obj eot of my invention is to enable the distance between the delivery end of a trumpet and the bite of the rolls receiving sliver therefrom to be varied as and whenever required without it being necessary to substitute one trumpet for another or to performany grinding; and accordingly it consists in a trumpet having an adjustable delivery or nose portion and means of lockin g said portion in adjusted position, all as will be described now with reference to the accompanying drawings, and as is particularly pointed out and distinctly defined in the claims at the close of this specification.

In the drawings, Figure 1 is a view, in vertical section on the line 1 1 of Fig. 2, of a trumpet embodying my invention in the best form which I have yet devised. Fig. 2 is a view of the trumpet, looking at the delivery end thereof or bottom in Fig. 1. Fig. 3 is a view of the body of the trumpet, looking at the same from the top in Fig. 1. Fig. 4 is a view in ver tical section on the line 4 4 of Fig. 3. Fig. 5 is aview, in side elevation, of the adjustable or nose portion of the trumpet. Fig. 6 is a view of the said adjustable or nose portion, looking at the same from the bottom in Fig. 5. Fig. 7

is a view in vertical section on line 7 7, Fig. 5, looking in the direction of the arrows in the latter figure. Fig. 8 is a view similar to Fig. 2, but showing the locking device retracted. Fig. 9 is a view showing the locking device detached.

At 1 is the main portion or body of my im proved trumpet, it being made by me usually with a cylindrical exterior to fit into a corresponding hole or socket in the usual lever or other support 011 which it is mounted, and with a flange 2 to prevent it from passing too far into such hole or socket. The said main portion or body 1 is tubular and it is provided with the internal screw-thread At 4. is the adjustable nose portion. It is screw-threaded exteriorly at 5 to fit the thread at the interior of the main portion or body 1 and is screwed into the latter, as shown in Fig. 1. The said nose portion 4 has the usual tapering passage or bore 6, formed centrally therethrough for the sliver,as clearly shown in. Figs. 1 and 7. By rotating the said nose portion within the main portion or body 1 the extent to which the tip or delivery end of said nose portion shall project beyond the main portion or body maybe varied as required. To facilitate the operation of making the adjustment, the exposed part of the nose portion is flattened on opposite sides thereof, as at 11 41, Figs. 2, 5, G, and 8, for the application of a suitable tool.

To hold the nose portion in the position of adjustment which has been given thereto, I provide locking devices coacting therewith. A convenient and preferred form of such devices consists, as shown of a curved spring 7, (see Figs. 8 and 9,) having one end thereof bent at approximately right angles to form a pin 8. A circumferential groove 9 is formed around the exterior of the main portion or body 1, into which the spring 7 is placed, its

form causing it to fit closely against the bot- The pin 8 projects 1 through a hole 10, which is formed in the Wall of the main portion or body 1 and enters tom of the groove 9.

a longitudinal groove 11, that is made in the exterior of the adjustable or nose portion 4:. So long as the inner end of the pin occupies the groove 11 the nose portion cannot turn relatively to the main portion or body, and thereby the parts are held locked together in the desired position of adjustment. lVhcn it is desired to effect adjustment, it is necessary only to withdraw the pin 8 from the groove 11, which may be effected readily by inserting a suitable tool beneath the spring 7 in the groove 0 and springing the same outwardly into the position which is indicated in Fig. 8. For the purpose of facilitating the entrance of the tool beneath the spring a portion 12 of the exterior of the main portion or body is slabbcd off at one side of the groove S], as shown clearly in Figs. 2 and 8. The described provisions for locking the parts together have the advantages that when the trumpet is in place in its support the look ing arrangement is completely covered. up and inaccessible. It can be gotten at only by removing the trumpet from the said support, and also after such removal the locking device can be disengaged from the nose portion only through the use of a speciallyfitted tool. Thereby the device operates to discourage a mill-hand from serreptitiously altering the adjustment of the trumpet in order to facilitate the working of the machine, and thereby decrease his duties in attending the same.

I claim as my invention- 1. A sliver-trumpet comprising a main part or body 1, a nose-portion 4 applied to the said main portion or body and having a sliver-pas sage therethrouglnmcans to eifect adjustment of said nose -portion in the direction of the length thereof relatively to the said main part orbody,and locking devices to prevent change of adjustment, substantially as described.

2. A slivertrumpet comprising a main part or body 1, a nose-portion 4 having a sliverpassage therethrough, the said parts having screw-threaded connection with each other and the nose-portion being adjustable in the direction of its length relatively to the main part or body, and a detent to restrain. the

said parts from rotation relative to each other,

substantially described.

A sliver-trumpet comprising a main part or body 1, a nose-portion 4 having a sliverpassage therethrough, the said parts having screw-threaded connection with each other and the nose-portion being adjustable in. the direction of its length relatively to the main part or body, one of said parts being grooved for the reception of: a locking device and formed with a hole therethrough, and the other thereof having a recess for engagement with the end of said locking device, and a spring locking device located in the groove and having a portion thereof projecting through the hole and entering the recess, substantially as described.

In testimony whereof I allix my signature in the presence of two witnesses.

\VILLIAH 1. (TANNING.

\Vitnesses:

SAML. G. STEPHENS, MARY CAVERLY. 

